Chair seat and back



FIG. 1 is a front elevational view of an embodiment of a chair seat and back according to my new design;

FIG. 2 is a rear elevational view of the embodiment;

FIG. 3 is a bottom plan view of the embodiment;

FIG. 4 is a top plan view of the embodiment;

FIG. 5 is a left side elevational view of the embodiment, and is also a mirror image of the right side thereof;

FIG. 6 is a left side cross-sectional view of the embodiment, which is taken along the lines 6--6 of FIG. 1; and,

FIG. 7 is a top cross-sectional view of the lower back portion of the embodiment, which is taken along the lines 7--7 of FIG. 5. 

The ornamental design for a chair seat and back, as shown and described. 